Search for invisible decays of the Υ(1S)
- We search for invisible decays of the Υ(1S) meson using a sample of 91.4×106 Υ(3S) mesons collected at the BABAR/PEP-II B factory. We select events containing the decay Υ(3S)→π+π-Υ(1S) and search for evidence of an undetectable Υ(1S) decay recoiling against the dipion system. We set an upper limit on the branching fraction B(Υ(1S)→invisible)<3.0×10-4 at the 90% confidence level. © 2009 The American Physical Society.
- Publisher copy:
- Pubs id:
- Local pid:
- Deposit date:
- Copyright date:
If you are the owner of this record, you can report an update to it here: Report update to this record